OpenCV on Udoo board

asked 2014-03-25 10:50:35 -0600

UncleSam
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updated 2014-03-25 10:58:59 -0600

Hi guys,

I'm new in the forum and I'm playing with the opencv library from a month ago for some experiments...

Has anybody ever implemented some face recognition project on a udoo board quad with ubuntu? (http://shop.udoo.org/eu/udoo-quad.html) I'm trying to create a gender recognizer but I get some problem with the libopencl 1.2 embedded. It gives a symbol lookup error regarding the .so file with a undefined symbol in the gcoOS_AtomConstruct when I try to use cvtConvert or training a Haar classifier.

thanks in advance for any type of help...

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answered 2014-03-28 11:33:54 -0600

UncleSam
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Solved.

For anyone who will encounter the same problem trying to use Opencv on a Udoo quad with ubuntu 12.04; freescale doesn't provide a full profile Opencl for his processors i.mx6 but the full profile it STRICTLY requested from Opencv. So some operations will be allowed (open video stream it's ok) others no (BGR2GRAY conversion, haar training and detecting ...)

So, for now, until freescale wont fix this, face recognition on Udoo+ubuntu using opencv it's not possible.

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nice, that you reported back !

since face-recognition does not profit from opencl at all, have you tried disabling opencl suppoprt in cmake when building the opencv libs ?

berak ( 2014-03-28 11:49:00 -0600 )edit

I've tried to build it in both ways. buth as written in the docs, opencv needs opencl full profile. in the embedded one things like 64 bit floating point numbers are missing; maybe this give some problem with the definition of Mat.

UncleSam ( 2014-03-31 03:53:33 -0600 )edit

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answered 2014-05-08 03:44:30 -0600

opencv on udoo
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Hai, I am eagerly waiting to do the face reconization on udoo board. please give me the correct details to install opencv on udoo board.

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Sorry but I don't think that It'll be possible until the udoo's arm processor does not support the OpenCL full profile. Many function of the library needs float at 64bit, but the embedded profile of openCL doesn't support them (and many other features). You can install itby the way, and do some simple image manipulation; use the Udoo with ubuntu 12.04 and follow the install istruction on the opencv site

http://docs.opencv.org/2.4/doc/tutorials/introduction/linux_install/linux_install.html#linux-installation

UncleSam ( 2014-05-12 08:49:54 -0600 )edit

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